Link-movement for engines.



No. 679,857. Patented Aug. 6

. v I. L. NEELY.

LINK MOVEMENT. FOR ENGINES.

(Application filed Apr. 19, 1900.1

- (Nb Model.)

witnesses:

T0 LtZZ whom it may concern:

UNITED STATES PATENT ()FFICE.

IRA L. NEELY, OF FAIRMOUNT, INDIANA, ASSIGNOR OF ONE-HALF TO L. G.

NEELY, OF ST.

MARYS, OHIO.

LINK-MOVEMENT FOR ENGINES.

SPECIFICATION forming part of Letters Patent N 0. 679,857, dated August 6, 1901.

Application filed April 19.1900.

Be it known that I, IRA L. NEELY, a'citizen of the United States, residing at Fairmount, Grant county, Indiana, have invented certain new and useful Improvements in Link Movements for Steam-Engines, of which the following is a specification.

My invention relates to means for controlling and shifting the gear in steam-engines, by which gear the steam-valve is operated and which serves as a variable cut-off or reverses the steam or renders the steam-valve inoperative, as may be required.

My invention is designed to be applied more particularly to steam-engines which are used in the oil-fields for drilling wells and for other purposes, where the engine may be located a considerable distance from the engineer or operator, and to so construct the link-controlling mechanism that a straight horizontal pull or push on a rod will easily and readily shift the link to any desired point.

A further object of my invention is to provide means in connection with my controlling mechanism by which the link is suspended in such manner as to hold the link off the link block or roller, giving a straight valve motion and preventing undue vibration of the link, thus obviating irregular'action of the valve.

A furthur object of inyinvention is to provide a cheap simple detachable attachment for varying or adjusting the point of cut-0E.-

I attain these objects by means of the do vices and arrangement of parts hereinafter described, and shown and illustrated in the accompanying drawings, made part hereof, in Which-"- Figure 1 is a side elevation of a steam-engine arranged for illustration as a pumpingengine and provided with my link-controlling device; Fig. 2, a top plan view of the same; Fig. 3, an edge view of my. variable cut-off attachment, and Fig. 4 a central longitudinal vertical sectional view of the same.

Like letters of reference indicate like parts throughout the drawings.

In the drawings, a is a lever pivoted at its lower end upon a rock shaft a, passing through and journaled in the bed of the engine.

lover a, as at 1).

Serial No. 13,472. (No model.)

b is a rod pivoted to the upper end of the This rod leads to such re-- mote point as may best suit the convenience of the operator.

0 is a connecting-bar pivoted at its upper end, as at c, to the lever a, near the upper end of the lever. At its lower end the connecting-bar c is, as at 0 pivotally connected with and supports the link (1. The link is in the usual manner, connected by means of cam-rods with cams on the main shaft. In the opening of the link is a block or roller d, upon which the link may be moved in the are of a circle. This block or roller is connected in the usual manner with the valve-stem e, which controls the steam-valve of the en gine.

It will be seen that instead of supporting the link in the usual manner the long connecting bar or support 0, suspending the link from the upright lever, will reduce the vibration and jar of the link to a minimum. It will 7 also be seen that my link-controlling mechanism consists entirely of straight members moving substantially in straight lines and "that it is economical in construction and efficient in action.

Fig. 1 shows the engine, crank, and valve ahead. Shouldthe operator desire to reverse the motion of the engine, he would pull on the rod f, and thus swing the lever toward the main shaft of the engine. This would raise the connecting-bar and link, which would open the steam-valve at the front of the cylinder and cause the motion of the en= gine to be reversed or to move in the opposite direction.

To the top of the engine-bed is bolted a horizontal plate f, through which is a slot in the direction of the length of the engine-bed, and through this slot passes the lever a. The ends of the slot serve as stops for the lever and limit the levers throw.

g is a flat block or shoe, trapezoidal in outline and provided with a slot g in oneof its edges of slightly greater cross-sectional area than the lever a. Through one of the sides of the shoe g is a set-screw 9 When the lever is disposed within the slot of the shoe, the set-screw may be set up against the lever, and the shoe and lever are now rigidly secured together. The slot through the plate f is wide enough to receive the shoe in place upon the lever. It will be seen that by raising or lowering the shoe g along the lever a the shoe will by its wedge-like action vary the point at which the end of the slot in the plate f serves as a stop for the lever, and thus by adjustment of the shoe 9' the throw of the lever is regulated.

aving described my invention and its operation, what I claim, and desire to secure by Letters Patent, is-

1. In a steam-engine,a link-movement comprising the following elements: a valve-controlling link, an upright lever pivoted at its lower end, an elongated operating-rod pivotally connected with the upper end of said lever, a connecting-bar pivotally secured atits upper end to the lever and having suspended from its lower end the link, stops on means for detachably securing said block or shoe in relation to said lever.

' IRA L. NEELY.

In presence of J. W. PAYToN, S. E.HAISLEY. 

